WASHINGTON (WUSA9) -- TheSmithsonian's National Zoo's giantpanda cub who was born onAug. 23 received her first veterinary exam late Monday. She was given "a clean bill of health," according to zoo officials.

Her mother Mei Xiang put her cub down and left her den at 4:11 p.m., say officials.The panda team then retrieved the cub and completed the exam by 4:31 p.m.

Officials say the cub has doubled in weight since her preliminary health check. "She now weighs slightly less than two pounds, up from 4.8 ounces, and has the signature black markings of a giant panda. Her heart rate was 130 beats per minute, and her respiratory rate was 42. From nose to tail she is 10.6 inches (27 centimeters) long and 9.8 inches (25 centimeters) wide around her belly. Her eyes have not opened yet," said officials in a press release on Tuesday.

Zoo officials say after the exam, Mei Xiang came back to the den and "immediately picked up her cub and began grooming her."